Publication

Abstract : This paper presents a design of a multiband low noise amplifier (LNA) for IEEE 802.11be - called Wi-Fi-7 wireless application, operating on 2.4GHz, 5GHz, and 6GHz bands. The proposed LNA design achieves less than 3 dB of Noise Figure (NF) across all the operational bands. The design achieves a high gain of 37.73 dB at 2.4 GHz and attains a gain greater than 15 dB across the other two frequency bands. Input and Output impedance matching of the amplifier is perfectly tuned to <-10dB from 2.4GHz to 6GHz frequency. The other primary concern of the low noise amplifier is linearity. The input matching and linearity have tradeoffs in the high frequency design. A simple RC circuit is placed at the input of the proposed LNA to mitigate this high frequency design issue. This adapted RC circuit helps to achieve the IIP3 of 4.546 dBm to 7.69 dBm, thereby increasing the amplifier's ability to handle high signal level interferences. This LNA design is one of the most efficient solutions for multiband wireless communication systems, with superior gain, low noise figure, and improved linearity, making it much more suitable for the next wireless generation -Wi-Fi 7 technologies. Cadence-180nm CMOS technology is adopted to implement the proposed LNA design with 1.8V supply.